var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var ejs = require('ejs')


var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var goodsRouter = require('./routes/goods')

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.engine('.html',ejs.__express)
app.set('view engine', 'html');

app.use(logger('dev'));

app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
// all page prevent unlogin //要在加载其他模块之前（usersRouter）等 拦截否则没意义了
app.use(function (req, res, next) {
  if (req.cookies.userId) { 
    next()
  }else{
    if (req.originalUrl == '/users/login' || req.originalUrl == '/users/logout' || req.originalUrl == '/users/okname' || req.originalUrl == '/users/checkname' || req.path == '/goods'){
    next()
    }else{
      res.json({
        status:1,
        mes:'当前未登录'
      })
    }
  }
})

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/goods', goodsRouter)

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});




// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
